Home / 3,671.28-5,485.72-2,775.92

Finding the Fourth Proportional to 3,671.28, 5,485.72 and 2,775.92

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Solution

The fourth proportional to 3,671.28, 5,485.72 and 2,775.92 is: 4,147.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,671.28 : 5,485.72 = 2,775.92 : x
  2. Step 2: Convert to fraction form
    3,671.28/5,485.72 = 2,775.92/x
  3. Step 3: Cross multiply
    3,671.28x = 5,485.72 × 2,775.92
  4. Step 4: Simplify right side
    3,671.28x = 15,227,919.86
  5. Step 5: Solve for x
    x = 15,227,919.86/3,671.28
  6. Step 6: Final answer
    x = 4,147.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.